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Subject: Re: Don't add domainname to 'To: Undisclosed-Recipient:;'
From: Russ Allbery (rrastanford.edu)
Date: Wed Jun 14 2000 - 15:15:55 CDT

laurens van alphen (craxx) <alphencraxx.nl> writes:

>> Shouldn't Undisclosed-Recipient be in a comment? As in
>> (Undisclosed-Recipient)

> Dunno, it probably SHOULD (as in RFC, but there's a real world).

Nope. Undisclosed-Recipient:; is a perfectly valid RFC 822 address. It's
an empty address group, containing no recipients, that's named
"Undisclosed-Recipient". It's a convenient way of denoting a mailbox that
doesn't actually deliver mail anywhere.

(Undisclosed-Recipipent) is *not* a valid RFC 822 address and would be a
violation of the standard, since the To header is required to contain at
least one mailbox. 

-- 
Russ Allbery (rrastanford.edu)             <http://www.eyrie.org/~eagle/>